Altronix MAXIMAL1RDV 16-Output PTC-Protected 220VAC Power Supply

Overview

The Altronix MAXIMAL1RDV is a rack-mount power distribution unit engineered for multi-device security installations running on 220VAC mains — the standard in international deployments and purpose-built facilities where North American 120VAC infrastructure is not present. Delivering selectable 12VDC at 4 amps or 24VDC at 3 amps across 16 individually PTC-protected outputs, it gives integrators a centralized, supervised power spine for cameras, access control readers, door strikes, and ancillary security devices without the cost and complexity of per-device power supplies. Browse the full Altronix power supply and distribution catalog to compare the MAXIMAL family lineup.

At 3.25 inches high and 19.125 inches wide, the MAXIMAL1RDV fits a standard 2U rack bay, making it appropriate for telecom closets, IDF racks, and headend equipment rooms. The 8.5-inch depth is shallow enough to accommodate most two-post open-frame racks. At 11.7 lbs, the unit is dense but manageable for a single installer during rack integration.

Key Features

• Selectable 12VDC or 24VDC Output: One unit covers the two most common security device voltage classes. Analog cameras, IP cameras with non-PoE power inputs, and motion detectors typically run at 12VDC; many door strikes and locking hardware operate at 24VDC. Switching between them at the supply level means you don't need separate rack-mounted units for mixed installations.
• 16 PTC-Protected Output Circuits: Each of the 16 outputs is individually protected by a resettable Polymeric Positive Temperature Coefficient device — if a connected device faults or shorts, that output trips without taking down the rest of the distribution bus. Unlike fused outputs, PTC devices self-reset once the fault clears, reducing service calls on remote or unattended sites.
• 2 Amp Per-Output Current Limit: With a maximum of 2A per output, the MAXIMAL1RDV enforces current discipline across the board. On a 4A total budget at 12VDC, this means you can run two fully loaded outputs simultaneously or distribute load more granularly across more circuits — useful when powering a mix of high-draw PTZ cameras and low-draw fixed cameras from the same supply.
• 220VAC Input (198–256VAC Working Range): The ±12% input tolerance around 220VAC handles real-world utility fluctuations common in international grid environments. A site running at 210VAC during peak load or 240VAC in a European facility both fall cleanly within spec — no additional voltage regulation required upstream. Draws only 1.0A from the mains, so a single 15A circuit can support multiple units.
• 50/60Hz Frequency Compatibility: Accepts both 50Hz and 60Hz mains, which matters when equipment is provisioned centrally and deployed across regions — the same SKU works in a 50Hz EU facility and a 60Hz Latin American site without rewiring or substitution.
• 0.7A Battery Charger Output: The integrated battery charger sustains a standby battery at 0.7A, supporting UPS-style continuity for the connected security devices. This is critical for access control applications where door locks must remain powered through a mains outage — the panel stays alive, the strike holds its programmed fail-state.
• AC Fail / Low Battery / Battery Presence Supervision: Three discrete supervisory signals let a connected fire alarm panel or access control system monitor power health in real time. An integrator can wire these into an alarm panel's zone inputs so a loss of AC or a missing/depleted battery generates an alert at the head-end — not a surprise discovered during an incident.
• Selectable Latching / Non-Latching Fire Alarm Interface: The onboard fire alarm interface can be configured for latching (output holds state after the trigger clears, requiring a manual reset) or non-latching (output resets automatically when the trigger clears). Latching is required in most AHJ-governed fire alarm integrations; non-latching suits access control unlock scenarios where you want doors to re-secure automatically after the fire signal ends.

Integration & Compatibility

The MAXIMAL1RDV is positioned within security power supplies as a distribution backbone rather than a single-device supply. It is best paired with a 220VAC-capable UPS or battery cabinet upstream for full standby continuity, with the internal charger maintaining the local standby battery. For installations wiring into a fire alarm control panel, the selectable fire alarm interface simplifies AHJ compliance by matching the panel's required supervisory behavior — confirm the specific panel's requirements before setting the latching mode.

Integrators deploying mixed 12VDC and 24VDC device environments should note that voltage selection applies to the entire unit — you cannot run some outputs at 12V and others at 24V on the same MAXIMAL1RDV. For mixed-voltage racks, plan for one unit per voltage class, or select a dual-voltage distribution model from the same family. Pair with a structured PoE switch when IP cameras are part of the deployment, reserving the MAXIMAL1RDV outputs for non-PoE devices and access control hardware.

If your project requires a larger output count, review the extended MAXIMAL series within the access control power supply category — several variants offer higher channel counts and higher aggregate current budgets for large-footprint installations. For planning multi-zone power distribution across a full building, consult a security system design guide to size supplies per zone correctly before specifying rack space.

Frequently Asked Questions

Q: What input voltage does the MAXIMAL1RDV require — can it run on 120VAC?

A: No. The MAXIMAL1RDV is designed exclusively for 220VAC mains, with a working range of 198VAC to 256VAC. It will not operate on a standard North American 120VAC circuit. Verify your facility's mains voltage before ordering.

Q: Can the MAXIMAL1RDV deliver both 12VDC and 24VDC at the same time across different outputs?

A: No. Voltage selection applies to all 16 outputs simultaneously — the unit operates in either 12VDC (4A total) or 24VDC (3A total) mode. Mixed-voltage requirements need separate power supply units.

Q: How does PTC protection differ from fused outputs on this unit?

A: PTC (Polymeric Positive Temperature Coefficient) devices are resettable — when a fault or short clears, the output recovers automatically without replacing a fuse. This is a practical advantage on remote or unattended sites where dispatching a technician to swap a fuse creates downtime.

Q: What does the fire alarm interface on the MAXIMAL1RDV do, and do I need to use it?

A: The fire alarm interface allows the power supply to respond to a fire alarm signal by switching output states — useful for releasing mag-lock doors or cutting power to specific devices during an emergency. It is field-selectable between latching and non-latching modes. It is optional; if no fire alarm integration is needed, it can simply be left unconfigured.

Q: What supervisory signals does the MAXIMAL1RDV provide?

A: The unit monitors three conditions: AC Fail (loss of mains power), Low Battery (standby battery below threshold), and Battery Presence (battery connected or missing). These signals can be wired into an alarm panel's zone inputs for centralized monitoring.

Q: What rack space does the MAXIMAL1RDV occupy?

A: The unit measures 3.25 inches high × 19.125 inches wide × 8.5 inches deep, fitting a standard 2U rack bay. At 11.7 lbs, standard rack hardware supports the weight without reinforcement in most 19-inch equipment racks.

Karl Wilson

When I spec international security installs — manufacturing facilities in Mexico, data centers in Europe, government infrastructure in the Middle East — the MAXIMAL1RDV comes up consistently as the right centralized power answer. The 198–256VAC working range is what earns it the spot: real-world 220VAC grids fluctuate, and a supply that trips at ±5% becomes a service liability within months. Sixteen PTC-protected outputs in a 2U footprint means I'm consolidating what would otherwise be eight to ten individual wall-warts or small DIN-rail supplies into one supervised, rack-managed device.

Technical Highlights:

• 16 PTC-Protected Outputs at 2A Max Each: Self-resetting protection means a shorted door strike or a failing camera power input doesn't take down the whole distribution bus — the faulted output trips, the rest stay live, and the circuit resets when the fault clears. No truck roll to swap a fuse at 2AM.
• 0.7A Integrated Battery Charger: Sustains a standby battery without a separate charger module consuming rack space or adding a wiring run. On access control installs where door hardware must hold fail-secure or fail-safe through a mains outage, this built-in charger is the difference between a compliant and a non-compliant installation.
• Three-Signal Supervision (AC Fail / Low Battery / Battery Presence): All three wire directly into standard alarm panel zone inputs. This lets the head-end panel generate a trouble condition on power degradation — before it becomes an outage. On monitored commercial sites, that's a service agreement requirement, not a nice-to-have.

Deployment Considerations:

• Voltage mode (12VDC vs 24VDC) is a unit-level selection — all 16 outputs run at the same voltage. Plan your panel schedule before installation; if a single rack mix requires both 12V and 24V devices, you need two units. At 1.0A mains draw each, two MAXIMAL1RDV units on a single 220VAC 10A circuit is well within headroom.
• Total output current at 12VDC is 4A across all 16 outputs — the 2A per-output cap is a per-circuit limit, not a guarantee that all 16 can run at 2A simultaneously. Load budget your camera and access control device list before finalizing output assignments; oversubscription of the aggregate budget is the most common field mistake on high-output distribution supplies.

The MAXIMAL1RDV is the right call for 220VAC rack rooms powering 8–16 non-PoE security devices where centralized supervision, automatic fault recovery, and fire alarm integration are required — specifically international commercial facilities, multi-tenant access control headends, and government security closets where a monitored, serviceable power spine is a design requirement rather than an option.